MukaPay Smart Contracts

This project contains the smart contracts for MukaPay, a privacy-preserving payment system using zero-knowledge proofs.

Deployed Contracts (Base Sepolia)

The following contracts are deployed on Base Sepolia testnet:

Contract	Address	Description
Vault	0xB4f7dF8d5ec4C61fF41040230fCF23d167220741	Main contract for handling deposits and payments
Verifier	0x55AE1Ba114ef202d92de37782083AF363A40A04C	ZK proof verification contract
MockUSDC	0x0a6CC1B2cB197AA6a6878fee28Fd1c908B603ad4	Test USDC token for development

USDC: 0x0a6CC1B2cB197AA6a6878fee28Fd1c908B603ad4 Verifier: 0xBE3a42c6D4e822c093Cabe4fC057162F80138BdB Vault: 0x489aD83e3Ba281958De9eE61797a92A10cEB6caA

Last updated: March 21, 2024

Project Structure

• contracts/: Smart contract source files
  • Vault.sol: Main contract for handling deposits and payments
  • verifier.sol: Auto-generated ZK proof verification contract
  • MockUSDC.sol: Test USDC token implementation
• test/: Contract test files
• scripts/: Deployment and interaction scripts

Development

Prerequisites

• Node.js
• npm or yarn
• Hardhat

Setup

1. Clone the repository
2. Install dependencies:

npm install

3. Create a .env file with the following variables:

PRIVATE_KEY=your_private_key_here
BASE_API_KEY=your_base_rpc_url_here

Testing

Run the test suite:

npx hardhat test

Deployment

Deploy to Base Sepolia:

npx hardhat run scripts/deploy.js --network base-sepolia

License

MIT